Compare as strings holding indices/version numbers.

src/string.cpp

@@ -149,6 +149,75 @@ namespace bx
 		return strCmpI(_lhs, _rhs.getPtr(), _rhs.getLength() );
 	}
 
+	int32_t strCmpV(const char* _lhs, const char* _rhs, int32_t _max)
+	{
+		int32_t ii   = 0;
+		int32_t idx  = 0;
+		bool    zero = true;
+
+		for (
+			; 0 < _max && _lhs[ii] == _rhs[ii]
+			; ++ii, --_max
+			)
+		{
+			const uint8_t ch = _lhs[ii];
+			if ('\0' == ch
+			||  '\0' == _rhs[ii])
+			{
+				break;
+			}
+
+			if (!isNumeric(ch) )
+			{
+				idx  = ii+1;
+				zero = true;
+			}
+			else if ('0' != ch)
+			{
+				zero = false;
+			}
+		}
+
+		if (0 == _max)
+		{
+			return 0;
+		}
+
+		if ('0' != _lhs[idx]
+		&&  '0' != _rhs[idx])
+		{
+			int32_t jj = 0;
+			for (jj = ii
+				; 0 < _max && isNumeric(_lhs[jj])
+				; ++jj, --_max
+				)
+			{
+				if (!isNumeric(_rhs[jj]) )
+				{
+					return 1;
+				}
+			}
+
+			if (isNumeric(_rhs[jj]))
+			{
+				return -1;
+			}
+		}
+		else if (zero
+			 &&  idx < ii
+			 && (isNumeric(_lhs[ii]) || isNumeric(_rhs[ii]) ) )
+		{
+			return (_lhs[ii] - '0') - (_rhs[ii] - '0');
+		}
+
+		return 0 == _max ? 0 : _lhs[ii] - _rhs[ii];
+	}
+
+	int32_t strCmpV(const char* _lhs, const StringView& _rhs)
+	{
+		return strCmpV(_lhs, _rhs.getPtr(), _rhs.getLength() );
+	}
+
 	int32_t strLen(const char* _str, int32_t _max)
 	{
 		if (NULL == _str)